Take-up for sewing-machines.



PATENTED JAN. 29, 1907.

' W. M. AMMERMAN.

TAKE-UP FOR SEWINGMAOHINES.

APPLICATION FILED MAY 4, 1904.

2 HEETS-SHEET 1.

1%,. 842,151 I PATBNTED JAN. 29, 1907.

W. M. 'AMMBRMAN.

TAKE-UP FOR SEWING MACHINES.

. APPLIUATION FILED MAY 4, 1904.

2 SHEETS-SHEET "H unrrnn s'ra rns PATENT carious.

WILLIAM M. AMMERMAN, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TOT HE EDWIN J.TOOF COMPANY, OF NEW HAVEN, CONNECTICUT, A CORPORA- TION OF NEW JERSEY.

TAKE-UP FOR SEWING-MACHINES.

Specification of Letters Patent.

Patented Jan. 29, 1907.

Application filed May 4.1904. Serial No- 206,291.

resident of New Haven, in the county of'New' Haven and State ofConnecticut, have invented certain new and useful Improvements inTake-Ups for Sewing-Machines, of

- which the following is'a specification.

This invention relates to improvements in sewingmachine take-ups, andmore particularly to that class of take-ups in which a take-up lever ispivotally connected at one end to a rotary actuating-crank and isfulcrumed at a point'betweenits ends on the.

free end of a link that is pivotally attached at its opposite end tosome stationary part of the frame ofthe machine, such arrangement andcombination of parts causing combined translatory and vibratingmovements to be imparted to the take-up lever when the machine is inoperation. In adjustingthe takeup for coooperation with the other partsof the stitch-forming mechanism great accuracy is required in ordentoassure perfect stitching; and it has therefore been one of the objectsof my present invention to provide an improved take-up mechanism havingadjusting' means whereby the throw or movement of the take-up lever maybe conveniently and accuratel T adjusted after the several'parts' of them ce anism have been otherwise as- A sembled. This object I attain bymeans of the novel features of construction and com bination of parts,as hereinafter set 'forth in detail, and pointed out in the claims.

Referring to the accom an'ying drawings,

forming part of this speci ication, Figure 1 is a front end elevation,with the face-plate rcmoved, of a sewing-machine arm provided with myimproved take-up. Fig. 2 is a side elevation of the same with the armbroken away. Figs. 3 and 4 are detail views illustrating the take-up andcertain associated parts at different times during the operation of themachine. Figs. 5 and 6 are end and side views, respectively, of anadjustable pivot-support detached from the crank-disk and Figs. 7 and 8are edge and side views,

respectively, of the erankdisk.

parts mall the figures of the (llawino-s.

Similar reference characters designate like medium of a pitman 5. Theseparts are 'of usual construction and operation. The

take-up embodying my invention, as herein shown, comprises. the straightor substanactuated by said crank-disk 3 through the tially straighttake-up lever 6, pivotally connected at one end to the said crank-disk 3andfulcrumed at a pointbetween its ends at 7 to the free end of aswinging link 8, that is pivotally attached at its opposite end to thearm of the machine at 9. constructed and arranged as thus described Withthe parts and as shown the crank 3 and the link'S will so operate thetake-u lever as to. cause its free or thread-engaging end to cooperatewith the other parts of the stitchdorming mechanism in a desired mannerto properly control the thread during the stitch-forming operation.

The crank-disk 3 is provided with the usual crank-pin for the connectiontherewith of the needle-bar pitman 5.

nection between the take-up lever and the said crank-disk; but in thepresent case instead of making a direct connection between the take-uplever and the crank-pin by entering the latter into an opening in thelever in the usual manner the said crank-pin is provided at the frontend thereof with an eccentrically-located pivot, herein shown as a screw11, for connection with the take-up lever. With this arrangement ofparts by turning the pin 10 in its seat 12 in the crankdisk the positionof the supported pivot 11 may be shifted to adjust the throw or movementof the connected takeup lever within certain limits, and thereby permita'dcsired accuracy of cooperation of the take-up with the other parts ofthe stitch-forming mech- This crank-pin (indi-' cated at 10) is alsoutilized for effecting conanis'm to be obtained. Any suitable means my;be employed to secure the pin 10 in adju bed position within its seat,the means prcvided for such purpose, as herein shown,

IOO

- of the thread from said e ye.

being a clamping or set screw 14, engaging with the disk at oppositesides of a slit 15 therein, which intersects the said pin-seat andcausing the walls of the latter to clamp and hold the contained pin inadjusted posltion.

As a means for permitting ad justm'cnt of the take-up Without removingor disassembling any of the parts thereof the arm or frame 1 is providedwith an opening 16 in a position opposite the peripheral edge of thecrank-disk, as shown in Fig. 2, through which a screw-driver or othersuitable tool may be inserted for the purpose of operating theclamping-screw 14, it being understood that by looseningthe said 'screwto unclamp 't hc pivot-supporting pin 10 the latter may be turned toshift or adjust the position of the pivot 11 as desired by means of thetakeup lever, after which the parts will be secured i in adjustedposition by again tightening the said clamping-screw.

The take-up lever 6 is provided with-the usual'thread-receiving eye 6 atits outer end, having a threading-slit 6 for the entrance of the threadthereinto, whichsaid slit is normally closed by a spring 17, that is soarranged as to permit the ready passage of the comprising a rotar threadpast the same into the eye 6 and thereafter prevent the accidentalwithdrawal What I claim is-- 1. A sewing-machine take-up mechanism,crank, a take-up lever pivotally connectc at one end to said crank,means for adjusting said take-up lever bodily in a direction radiallyrelative to the axis of v said crank, and means cooperating with saidcrank for-controlling the movement of said take-up lever.

2. A sewing-machinetake-up mechanism,

comprising a rotary crank, a take-up lever, a pivot carried by saidcrank to which one end of said take-up lever is connected and beingadjustable to adjust the take-up lever bodily in a direction radiallyrelative to the axis of thccrank, and means cooperating Withsaid crank'for controlling the movement of the take-up lever.

y 3. A sewing-machine take-up mechanism, comprising a rotary crank, apin rotatably.

mounted on said crank and carr ing an cecentricall -supported pivot, ata re-up lever connects only at one end to said pivot and being bodil 1adjustable thereby in a direction radial yrelative to the axis of saidcrank, and a link cooperating with said crank for controlling themovement of the take-up lever. v

4. A sewing-machine take-up mechanism, comprising a rotary crank-diskhaving an opening therein, a in rotatably seated Within said opening ancarrying an eccentricallysupported plvot, a take-u. lever connected atone end only w th sea pivot and being bodily adjustable thereby in adirection radially relative to the axis of the said crank,

and a pivoted link cooperating with said crank for controlling themovement of take-up lever.

5. In a sewing-machine, the'combinatiqn with a takeup mechanismcomprising a to; tary crank, an adjustable pivot carried by said crank,a clamping-screw located at the periphery of the crank for securing saidpivot in adjusted position, a take-up lever connected at one end to saidpivot, and means the cooperating with said crank for controlling

